Thank you for the help scrawl. It seems that Debian puts the libs in /usr/local/lib/OGRE and other libs like libMyGUIEngine.so libOgreMain.so.1.7.2 libOgreRTShaderSystem.so libMyGUIEngine.so.3 libOgrePaging.so libOgreRTShaderSystem.so.1.7.2 libMyGUIEngine.so.3.0.1 libOgrePaging.so.1.7.2 libOgreTerrain.so libMyGUI.OgrePlatform.a libOgreProperty.so libOgreTerrain.so.1.7.2 libOgreMain.so and libOgreProperty.so.1.7.2 in /usr/local/lib. So be aware Debian users :)